DARKDYNASTYK9S was founded by Marlon Grennan in 2004 and is family own and run by Marlon and his wife Lisa Grennan located on a breathtaking 150 acres in the beautiful White Mountains of New Hampshire.We are known for breeding and training the finest XL American Pitbull Terriers and proudly promote the well-being and reputation of this working breed with each carefully raised puppy and well trained dog in our growing family.